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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/service_worker/service_worker_process_manager.h"
#include "base/bind.h"
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/run_loop.h"
#include "content/browser/service_worker/service_worker_test_utils.h"
#include "content/common/service_worker/embedded_worker_settings.h"
#include "content/public/common/child_process_host.h"
#include "content/public/test/mock_render_process_host.h"
#include "content/public/test/test_browser_context.h"
#include "content/public/test/test_browser_thread_bundle.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
namespace content {
namespace {
void DidAllocateWorkerProcess(const base::Closure& quit_closure,
ServiceWorkerStatusCode* status_out,
int* process_id_out,
bool* is_new_process_out,
ServiceWorkerStatusCode status,
int process_id,
bool is_new_process,
const EmbeddedWorkerSettings& settings) {
*status_out = status;
*process_id_out = process_id;
*is_new_process_out = is_new_process;
quit_closure.Run();
}
} // namespace
class ServiceWorkerProcessManagerTest : public testing::Test {
public:
ServiceWorkerProcessManagerTest() {}
void SetUp() override {
browser_context_.reset(new TestBrowserContext);
process_manager_.reset(
new ServiceWorkerProcessManager(browser_context_.get()));
pattern_ = GURL("http://www.example.com/");
script_url_ = GURL("http://www.example.com/sw.js");
}
void TearDown() override {
process_manager_->Shutdown();
process_manager_.reset();
}
std::unique_ptr<MockRenderProcessHost> CreateRenderProcessHost() {
return base::MakeUnique<MockRenderProcessHost>(browser_context_.get());
}
protected:
std::unique_ptr<TestBrowserContext> browser_context_;
std::unique_ptr<ServiceWorkerProcessManager> process_manager_;
GURL pattern_;
GURL script_url_;
private:
content::TestBrowserThreadBundle thread_bundle_;
DISALLOW_COPY_AND_ASSIGN(ServiceWorkerProcessManagerTest);
};
TEST_F(ServiceWorkerProcessManagerTest, SortProcess) {
// Process 1 has 2 refs, 2 has 3 refs and 3 has 1 ref.
process_manager_->AddProcessReferenceToPattern(pattern_, 1);
process_manager_->AddProcessReferenceToPattern(pattern_, 1);
process_manager_->AddProcessReferenceToPattern(pattern_, 2);
process_manager_->AddProcessReferenceToPattern(pattern_, 2);
process_manager_->AddProcessReferenceToPattern(pattern_, 2);
process_manager_->AddProcessReferenceToPattern(pattern_, 3);
// Process 2 has the biggest # of references and it should be chosen.
EXPECT_THAT(process_manager_->SortProcessesForPattern(pattern_),
testing::ElementsAre(2, 1, 3));
process_manager_->RemoveProcessReferenceFromPattern(pattern_, 1);
process_manager_->RemoveProcessReferenceFromPattern(pattern_, 1);
// Scores for each process: 2 : 3, 3 : 1, process 1 is removed.
EXPECT_THAT(process_manager_->SortProcessesForPattern(pattern_),
testing::ElementsAre(2, 3));
}
TEST_F(ServiceWorkerProcessManagerTest, FindAvailableProcess) {
std::unique_ptr<MockRenderProcessHost> host1(CreateRenderProcessHost());
std::unique_ptr<MockRenderProcessHost> host2(CreateRenderProcessHost());
std::unique_ptr<MockRenderProcessHost> host3(CreateRenderProcessHost());
// Process 1 has 2 refs, 2 has 3 refs and 3 has 1 ref.
process_manager_->AddProcessReferenceToPattern(pattern_, host1->GetID());
process_manager_->AddProcessReferenceToPattern(pattern_, host1->GetID());
process_manager_->AddProcessReferenceToPattern(pattern_, host2->GetID());
process_manager_->AddProcessReferenceToPattern(pattern_, host2->GetID());
process_manager_->AddProcessReferenceToPattern(pattern_, host2->GetID());
process_manager_->AddProcessReferenceToPattern(pattern_, host3->GetID());
// When all processes are in foreground, process 2 that has the highest
// refcount should be chosen.
EXPECT_EQ(host2->GetID(), process_manager_->FindAvailableProcess(pattern_));
// Backgrounded process 2 should be deprioritized.
host2->set_is_process_backgrounded(true);
EXPECT_EQ(host1->GetID(), process_manager_->FindAvailableProcess(pattern_));
// When all processes are in background, process 2 that has the highest
// refcount should be chosen.
host1->set_is_process_backgrounded(true);
host3->set_is_process_backgrounded(true);
EXPECT_EQ(host2->GetID(), process_manager_->FindAvailableProcess(pattern_));
// Process 3 should be chosen because it is the only foreground process.
host3->set_is_process_backgrounded(false);
EXPECT_EQ(host3->GetID(), process_manager_->FindAvailableProcess(pattern_));
}
TEST_F(ServiceWorkerProcessManagerTest,
AllocateWorkerProcess_FindAvailableProcess) {
const int kEmbeddedWorkerId1 = 100;
const int kEmbeddedWorkerId2 = 200;
const int kEmbeddedWorkerId3 = 300;
GURL scope1("http://example.com/scope1");
GURL scope2("http://example.com/scope2");
// Set up mock renderer process hosts.
std::unique_ptr<MockRenderProcessHost> host1(CreateRenderProcessHost());
std::unique_ptr<MockRenderProcessHost> host2(CreateRenderProcessHost());
process_manager_->AddProcessReferenceToPattern(scope1, host1->GetID());
process_manager_->AddProcessReferenceToPattern(scope2, host2->GetID());
ASSERT_EQ(0u, host1->GetWorkerRefCount());
ASSERT_EQ(0u, host2->GetWorkerRefCount());
std::map<int, ServiceWorkerProcessManager::ProcessInfo>& instance_info =
process_manager_->instance_info_;
// (1) Allocate a process to a worker.
base::RunLoop run_loop1;
ServiceWorkerStatusCode status = SERVICE_WORKER_ERROR_MAX_VALUE;
int process_id = -10;
bool is_new_process = true;
process_manager_->AllocateWorkerProcess(
kEmbeddedWorkerId1, scope1, script_url_,
true /* can_use_existing_process */,
base::Bind(&DidAllocateWorkerProcess, run_loop1.QuitClosure(), &status,
&process_id, &is_new_process));
run_loop1.Run();
// An existing process should be allocated to the worker.
EXPECT_EQ(SERVICE_WORKER_OK, status);
EXPECT_EQ(host1->GetID(), process_id);
EXPECT_FALSE(is_new_process);
EXPECT_EQ(1u, host1->GetWorkerRefCount());
EXPECT_EQ(0u, host2->GetWorkerRefCount());
EXPECT_EQ(1u, instance_info.size());
std::map<int, ServiceWorkerProcessManager::ProcessInfo>::iterator found =
instance_info.find(kEmbeddedWorkerId1);
ASSERT_TRUE(found != instance_info.end());
EXPECT_EQ(host1->GetID(), found->second.process_id);
// (2) Allocate a process to another worker whose scope is the same with the
// first worker.
base::RunLoop run_loop2;
status = SERVICE_WORKER_ERROR_MAX_VALUE;
process_id = -10;
is_new_process = true;
process_manager_->AllocateWorkerProcess(
kEmbeddedWorkerId2, scope1, script_url_,
true /* can_use_existing_process */,
base::Bind(&DidAllocateWorkerProcess, run_loop2.QuitClosure(), &status,
&process_id, &is_new_process));
run_loop2.Run();
// The same process should be allocated to the second worker.
EXPECT_EQ(SERVICE_WORKER_OK, status);
EXPECT_EQ(host1->GetID(), process_id);
EXPECT_FALSE(is_new_process);
EXPECT_EQ(2u, host1->GetWorkerRefCount());
EXPECT_EQ(0u, host2->GetWorkerRefCount());
EXPECT_EQ(2u, instance_info.size());
found = instance_info.find(kEmbeddedWorkerId2);
ASSERT_TRUE(found != instance_info.end());
EXPECT_EQ(host1->GetID(), found->second.process_id);
// (3) Allocate a process to a third worker whose scope is different from
// other workers.
base::RunLoop run_loop3;
status = SERVICE_WORKER_ERROR_MAX_VALUE;
process_id = -10;
is_new_process = true;
process_manager_->AllocateWorkerProcess(
kEmbeddedWorkerId3, scope2, script_url_,
true /* can_use_existing_process */,
base::Bind(&DidAllocateWorkerProcess, run_loop3.QuitClosure(), &status,
&process_id, &is_new_process));
run_loop3.Run();
// A different existing process should be allocated to the third worker.
EXPECT_EQ(SERVICE_WORKER_OK, status);
EXPECT_EQ(host2->GetID(), process_id);
EXPECT_FALSE(is_new_process);
EXPECT_EQ(2u, host1->GetWorkerRefCount());
EXPECT_EQ(1u, host2->GetWorkerRefCount());
EXPECT_EQ(3u, instance_info.size());
found = instance_info.find(kEmbeddedWorkerId3);
ASSERT_TRUE(found != instance_info.end());
EXPECT_EQ(host2->GetID(), found->second.process_id);
// The instance map should be updated by process release.
process_manager_->ReleaseWorkerProcess(kEmbeddedWorkerId3);
EXPECT_EQ(2u, host1->GetWorkerRefCount());
EXPECT_EQ(0u, host2->GetWorkerRefCount());
EXPECT_EQ(2u, instance_info.size());
EXPECT_TRUE(base::ContainsKey(instance_info, kEmbeddedWorkerId1));
EXPECT_TRUE(base::ContainsKey(instance_info, kEmbeddedWorkerId2));
process_manager_->ReleaseWorkerProcess(kEmbeddedWorkerId1);
EXPECT_EQ(1u, host1->GetWorkerRefCount());
EXPECT_EQ(0u, host2->GetWorkerRefCount());
EXPECT_EQ(1u, instance_info.size());
EXPECT_TRUE(base::ContainsKey(instance_info, kEmbeddedWorkerId2));
process_manager_->ReleaseWorkerProcess(kEmbeddedWorkerId2);
EXPECT_EQ(0u, host1->GetWorkerRefCount());
EXPECT_EQ(0u, host2->GetWorkerRefCount());
EXPECT_TRUE(instance_info.empty());
}
TEST_F(ServiceWorkerProcessManagerTest, AllocateWorkerProcess_InShutdown) {
process_manager_->Shutdown();
ASSERT_TRUE(process_manager_->IsShutdown());
base::RunLoop run_loop;
ServiceWorkerStatusCode status = SERVICE_WORKER_ERROR_MAX_VALUE;
int process_id = -10;
bool is_new_process = true;
process_manager_->AllocateWorkerProcess(
1, pattern_, script_url_, true /* can_use_existing_process */,
base::Bind(&DidAllocateWorkerProcess, run_loop.QuitClosure(), &status,
&process_id, &is_new_process));
run_loop.Run();
// Allocating a process in shutdown should abort.
EXPECT_EQ(SERVICE_WORKER_ERROR_ABORT, status);
EXPECT_EQ(ChildProcessHost::kInvalidUniqueID, process_id);
EXPECT_FALSE(is_new_process);
EXPECT_TRUE(process_manager_->instance_info_.empty());
}
} // namespace content
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